In [1]: polylog(S(3)/2, -z).series(z, 0, 5)
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-1-cb514b271258> in <module>()
----> 1 polylog(S(3)/2, -z).series(z, 0, 5)

/home/ondrej/repos/sympy/sympy/core/expr.py in series(self, x, x0, n, dir, logx)
   2474             # replace x with an x that has a positive assumption
   2475             xpos = Dummy('x', positive=True, finite=True)
-> 2476             rv = self.subs(x, xpos).series(xpos, x0, n, dir, logx=logx)
   2477             if n is None:
   2478                 return (s.subs(xpos, x) for s in rv)

/home/ondrej/repos/sympy/sympy/core/expr.py in series(self, x, x0, n, dir, logx)
   2481 
   2482         if n is not None:  # nseries handling
-> 2483             s1 = self._eval_nseries(x, n=n, logx=logx)
   2484             o = s1.getO() or S.Zero
   2485             if o:

/home/ondrej/repos/sympy/sympy/core/function.py in _eval_nseries(self, x, n, logx)
    599                 #let's try the general algorithm
    600                 term = e.subs(x, S.Zero)
--> 601                 if term.is_finite is False or term is S.NaN:
    602                     raise PoleError("Cannot expand %s around 0" % (self))
    603                 series = term

AttributeError: 'int' object has no attribute 'is_finite'